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Finding the Fourth Proportional to 103,692.10, 155,538.15 and 82,956.10

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Solution

The fourth proportional to 103,692.10, 155,538.15 and 82,956.10 is: 124,434.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,692.10 : 155,538.15 = 82,956.10 : x
  2. Step 2: Convert to fraction form
    103,692.10/155,538.15 = 82,956.10/x
  3. Step 3: Cross multiply
    103,692.10x = 155,538.15 × 82,956.10
  4. Step 4: Simplify right side
    103,692.10x = 12,902,838,325.22
  5. Step 5: Solve for x
    x = 12,902,838,325.22/103,692.10
  6. Step 6: Final answer
    x = 124,434.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.